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https://github.com/reactos/reactos.git
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214 lines
6.4 KiB
C
214 lines
6.4 KiB
C
#include <precomp.h>
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LRESULT WINAPI
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FlatComboProc(HWND hwnd,
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UINT msg,
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WPARAM wParam,
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LPARAM lParam)
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{
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HDC hdc;
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PAINTSTRUCT ps;
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RECT rect, rect2;
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POINT pt;
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WNDPROC OldComboProc = (WNDPROC)GetWindowLong(hwnd, GWL_USERDATA);
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static BOOL fMouseDown = FALSE;
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static BOOL fButtonDown = FALSE;
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switch(msg)
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{
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case WM_PAINT:
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{
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if(wParam == 0) hdc = BeginPaint(hwnd, &ps);
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else hdc = (HDC)wParam;
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/* mask off the borders and draw ComboBox normally */
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GetClientRect(hwnd, &rect);
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InflateRect(&rect,
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-GetSystemMetrics(SM_CXEDGE)*2,
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-GetSystemMetrics(SM_CYEDGE)*2);
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rect.right -= GetSystemMetrics(SM_CXVSCROLL);
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IntersectClipRect(hdc,
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rect.left,
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rect.top,
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rect.right,
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rect.bottom);
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/* Draw the ComboBox */
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CallWindowProc(OldComboProc,
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hwnd,
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msg,
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(WPARAM)hdc,
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lParam);
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/* Now mask off inside and draw the borders */
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SelectClipRgn(hdc,
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NULL);
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rect.right += GetSystemMetrics(SM_CXVSCROLL);
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ExcludeClipRect(hdc,
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rect.left,
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rect.top,
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rect.right,
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rect.bottom);
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/* draw borders */
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GetClientRect(hwnd,
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&rect2);
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FillRect(hdc,
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&rect2,
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//CreateSolidBrush(RGB(0,0,0)));
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GetSysColorBrush(COLOR_3DFACE));
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/* now draw the button */
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SelectClipRgn(hdc,
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NULL);
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rect.left = rect.right - GetSystemMetrics(SM_CXVSCROLL);
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if(fButtonDown)
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{
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HBRUSH oldBrush;
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HPEN oldPen;
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POINT pt[3];
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FillRect(hdc, &rect, CreateSolidBrush(RGB(182,189,210)));
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rect.top -= 1;
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rect.bottom += 1;
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FrameRect(hdc, &rect, GetStockBrush(WHITE_BRUSH));
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pt[0].x = rect.right - ((GetSystemMetrics(SM_CXVSCROLL) / 2) + 2);
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pt[0].y = rect.bottom / 2;
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pt[1].x = pt[0].x + 4;
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pt[1].y = pt[0].y;
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pt[2].x = pt[1].x - 2;
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pt[2].y = pt[1].y + 2;
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oldPen = (HPEN) SelectObject(hdc, GetStockPen(WHITE_PEN));
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oldBrush = (HBRUSH) SelectObject(hdc, GetStockBrush(WHITE_BRUSH));
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Polygon(hdc, pt, 3);
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SelectObject(hdc, oldPen);
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SelectObject(hdc, oldBrush);
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}
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else
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{
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HBRUSH oldBrush;
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POINT pt[3];
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FillRect(hdc, &rect, GetSysColorBrush(COLOR_3DFACE));
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rect.top -= 1;
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rect.bottom += 1;
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FrameRect(hdc, &rect, GetStockBrush(WHITE_BRUSH));
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pt[0].x = rect.right - ((GetSystemMetrics(SM_CXVSCROLL) / 2) + 2);
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pt[0].y = rect.bottom / 2;
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pt[1].x = pt[0].x + 4;
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pt[1].y = pt[0].y;
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pt[2].x = pt[1].x - 2;
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pt[2].y = pt[1].y + 2;
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oldBrush = (HBRUSH) SelectObject(hdc, GetStockBrush(BLACK_BRUSH));
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Polygon(hdc, pt, 3);
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SelectObject(hdc, oldBrush);
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}
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if(wParam == 0)
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EndPaint(hwnd, &ps);
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return 0;
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}
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/* check if mouse is within drop-arrow area, toggle
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* a flag to say if the mouse is up/down. Then invalidate
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* the window so it redraws to show the changes. */
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case WM_LBUTTONDBLCLK:
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case WM_LBUTTONDOWN:
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{
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pt.x = (short)LOWORD(lParam);
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pt.y = (short)HIWORD(lParam);
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GetClientRect(hwnd, &rect);
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InflateRect(&rect,
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-GetSystemMetrics(SM_CXEDGE),
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-GetSystemMetrics(SM_CYEDGE));
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rect.left = rect.right - GetSystemMetrics(SM_CXVSCROLL);
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if(PtInRect(&rect, pt))
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{
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/* we *should* call SetCapture, but the ComboBox does it for us */
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fMouseDown = TRUE;
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fButtonDown = TRUE;
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InvalidateRect(hwnd, 0, 0);
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}
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}
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break;
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/* mouse has moved. Check to see if it is in/out of the drop-arrow */
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case WM_MOUSEMOVE:
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{
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pt.x = (short)LOWORD(lParam);
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pt.y = (short)HIWORD(lParam);
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if(fMouseDown && (wParam & MK_LBUTTON))
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{
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GetClientRect(hwnd, &rect);
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InflateRect(&rect, -GetSystemMetrics(SM_CXEDGE), -GetSystemMetrics(SM_CYEDGE));
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rect.left = rect.right - GetSystemMetrics(SM_CXVSCROLL);
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if(fButtonDown != PtInRect(&rect, pt))
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{
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fButtonDown = PtInRect(&rect, pt);
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InvalidateRect(hwnd, 0, 0);
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}
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}
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}
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break;
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case WM_LBUTTONUP:
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{
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if(fMouseDown)
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{
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/* No need to call ReleaseCapture, the ComboBox does it for us */
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fMouseDown = FALSE;
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fButtonDown = FALSE;
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InvalidateRect(hwnd, 0, 0);
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}
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}
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break;
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}
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return CallWindowProc(OldComboProc,
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hwnd,
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msg,
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wParam,
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lParam);
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}
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VOID MakeFlatCombo(HWND hwndCombo)
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{
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LONG OldComboProc;
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/* Remember old window procedure */
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OldComboProc = GetWindowLongPtr(hwndCombo, GWL_WNDPROC);
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SetWindowLongPtr(hwndCombo,
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GWL_USERDATA,
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OldComboProc);
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/* Perform the subclass */
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SetWindowLongPtr(hwndCombo,
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GWL_WNDPROC,
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(LONG_PTR)FlatComboProc);
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}
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